package com.heima.admin.gateway.filter;


import com.heima.admin.gateway.utils.AppJwtUtil;
import io.jsonwebtoken.Claims;
import org.apache.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Component
public class AuthorizeFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        //1.判断是否为登录请求
       if (request.getURI().getPath().contains("login")){
          return chain.filter(exchange);
       }
       //2.走到这就不是登录请求了.校验token
        String token = request.getHeaders().getFirst("token");
        if (StringUtils.isBlank(token)){
             response.setStatusCode(HttpStatus.UNAUTHORIZED);
             response.setComplete();
        }
        try {
            Claims claimsBody = AppJwtUtil.getClaimsBody(token);
            int verifyToken = AppJwtUtil.verifyToken(claimsBody);
            if (verifyToken==1||verifyToken==2){
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
               return response.setComplete();
            }
        } catch (Exception e) {
            e.printStackTrace();
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
           return response.setComplete();
        }

        return chain.filter(exchange);
    }
    @Override
    public int getOrder() {
        return -1;
    }
}
